much, the heightened security here is very acute and that does contradict a bit with a comments by law enforcement to sort of calm the public saying there's no imminent threat because the fact is, there is a bomber or bombers on the loose. those photos you mentioned before, we are getting these new photos in. they show the circuit board. they show most interestingly, elements of that pressure cooker, which you can see part of a corporate logo on that and the black nylon bag which also seems to show a corporate logo on it. now, what's significant about that is that it gives investigators a lead. they can now go to stores that sell these particular items, the pressure cookers, the nylon bags and ask have, who's been buying these items recently? do they have a list? is there surveillance cameras at some of these stores? now, that's going to be tough. it could take a long time. i'm told pressure cookers like this could also be sold at yard sales. so it may be a dead end in that respect, but it gives them something to work on in the absence of other leads. >> michael isakoff with the latest